"Unable to equip gear. Retainer is currently occupied".

With some kind of power, we can alter the items that a retainer has, both the things you can withdraw and deposit as well as market board listings when they are "occupied". But somehow, when it comes to gear, it's suddenly unavailale.

Can we equip/unequip gear on our lovely retainers when they are occupied, as we do with withdrawing, depositing and sales?